12663751679 has 4 divisors (see below), whose sum is σ = 12958257576. Its totient is φ = 12369245784.

The previous prime is 12663751663. The next prime is 12663751691. The reversal of 12663751679 is 97615736621.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12663751679 - 2⁴ = 12663751663 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12663751679.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12663751649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 147252884 + ... + 147252969.

It is an arithmetic number, because the mean of its divisors is an integer number (3239564394).

Almost surely, 2^12663751679 is an apocalyptic number.

12663751679 is a deficient number, since it is larger than the sum of its proper divisors (294505897).

12663751679 is an equidigital number, since it uses as much as digits as its factorization.

12663751679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294505896.

The product of its digits is 2857680, while the sum is 53.

The spelling of 12663751679 in words is "twelve billion, six hundred sixty-three million, seven hundred fifty-one thousand, six hundred seventy-nine".